drivers/net/wireless/iwlwifi/iwl-debugfs.c

   1 /******************************************************************************
   2  *
   3  * GPL LICENSE SUMMARY
   4  *
   5  * Copyright(c) 2008 - 2009 Intel Corporation. All rights reserved.
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of version 2 of the GNU General Public License as
   9  * published by the Free Software Foundation.
  10  *
  11  * This program is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
  19  * USA
  20  *
  21  * The full GNU General Public License is included in this distribution
  22  * in the file called LICENSE.GPL.
  23  *
  24  * Contact Information:
  25  *  Intel Linux Wireless <ilw@linux.intel.com>
  26  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  27  *****************************************************************************/
  28
  29 #include <linux/kernel.h>
  30 #include <linux/module.h>
  31 #include <linux/debugfs.h>
  32
  33 #include <linux/ieee80211.h>
  34 #include <net/mac80211.h>
  35
  36
  37 #include "iwl-dev.h"
  38 #include "iwl-debug.h"
  39 #include "iwl-core.h"
  40 #include "iwl-io.h"
  41
  42
  43 /* create and remove of files */
  44 #define DEBUGFS_ADD_DIR(name, parent) do {                              \
  45         dbgfs->dir_##name = debugfs_create_dir(#name, parent);          \
  46         if (!(dbgfs->dir_##name))                                       \
  47                 goto err;                                               \
  48 } while (0)
  49
  50 #define DEBUGFS_ADD_FILE(name, parent) do {                             \
  51         dbgfs->dbgfs_##parent##_files.file_##name =                     \
  52         debugfs_create_file(#name, 0644, dbgfs->dir_##parent, priv,     \
  53                                 &iwl_dbgfs_##name##_ops);               \
  54         if (!(dbgfs->dbgfs_##parent##_files.file_##name))               \
  55                 goto err;                                               \
  56 } while (0)
  57
  58 #define DEBUGFS_ADD_BOOL(name, parent, ptr) do {                        \
  59         dbgfs->dbgfs_##parent##_files.file_##name =                     \
  60         debugfs_create_bool(#name, 0644, dbgfs->dir_##parent, ptr);     \
  61         if (IS_ERR(dbgfs->dbgfs_##parent##_files.file_##name)           \
  62                         || !dbgfs->dbgfs_##parent##_files.file_##name)  \
  63                 goto err;                                               \
  64 } while (0)
  65
  66 #define DEBUGFS_ADD_X32(name, parent, ptr) do {                        \
  67         dbgfs->dbgfs_##parent##_files.file_##name =                     \
  68         debugfs_create_x32(#name, 0444, dbgfs->dir_##parent, ptr);     \
  69         if (IS_ERR(dbgfs->dbgfs_##parent##_files.file_##name)           \
  70                         || !dbgfs->dbgfs_##parent##_files.file_##name)  \
  71                 goto err;                                               \
  72 } while (0)
  73
  74 #define DEBUGFS_REMOVE(name)  do {              \
  75         debugfs_remove(name);                   \
  76         name = NULL;                            \
  77 } while (0);
  78
  79 /* file operation */
  80 #define DEBUGFS_READ_FUNC(name)                                         \
  81 static ssize_t iwl_dbgfs_##name##_read(struct file *file,               \
  82                                         char __user *user_buf,          \
  83                                         size_t count, loff_t *ppos);
  84
  85 #define DEBUGFS_WRITE_FUNC(name)                                        \
  86 static ssize_t iwl_dbgfs_##name##_write(struct file *file,              \
  87                                         const char __user *user_buf,    \
  88                                         size_t count, loff_t *ppos);
  89
  90
  91 static int iwl_dbgfs_open_file_generic(struct inode *inode, struct file *file)
  92 {
  93         file->private_data = inode->i_private;
  94         return 0;
  95 }
  96
  97 #define DEBUGFS_READ_FILE_OPS(name)                                     \
  98         DEBUGFS_READ_FUNC(name);                                        \
  99 static const struct file_operations iwl_dbgfs_##name##_ops = {          \
 100         .read = iwl_dbgfs_##name##_read,                                \
 101         .open = iwl_dbgfs_open_file_generic,                            \
 102 };
 103
 104 #define DEBUGFS_WRITE_FILE_OPS(name)                                    \
 105         DEBUGFS_WRITE_FUNC(name);                                       \
 106 static const struct file_operations iwl_dbgfs_##name##_ops = {          \
 107         .write = iwl_dbgfs_##name##_write,                              \
 108         .open = iwl_dbgfs_open_file_generic,                            \
 109 };
 110
 111
 112 #define DEBUGFS_READ_WRITE_FILE_OPS(name)                               \
 113         DEBUGFS_READ_FUNC(name);                                        \
 114         DEBUGFS_WRITE_FUNC(name);                                       \
 115 static const struct file_operations iwl_dbgfs_##name##_ops = {          \
 116         .write = iwl_dbgfs_##name##_write,                              \
 117         .read = iwl_dbgfs_##name##_read,                                \
 118         .open = iwl_dbgfs_open_file_generic,                            \
 119 };
 120
 121
 122 static ssize_t iwl_dbgfs_tx_statistics_read(struct file *file,
 123                                                 char __user *user_buf,
 124                                                 size_t count, loff_t *ppos) {
 125
 126         struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
 127         char buf[256];
 128         int pos = 0;
 129         const size_t bufsz = sizeof(buf);
 130
 131         pos += scnprintf(buf + pos, bufsz - pos, "mgmt: %u\n",
 132                                                 priv->tx_stats[0].cnt);
 133         pos += scnprintf(buf + pos, bufsz - pos, "ctrl: %u\n",
 134                                                 priv->tx_stats[1].cnt);
 135         pos += scnprintf(buf + pos, bufsz - pos, "data: %u\n",
 136                                                 priv->tx_stats[2].cnt);
 137
 138         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 139 }
 140
 141 static ssize_t iwl_dbgfs_rx_statistics_read(struct file *file,
 142                                                 char __user *user_buf,
 143                                                 size_t count, loff_t *ppos) {
 144
 145         struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
 146         char buf[256];
 147         int pos = 0;
 148         const size_t bufsz = sizeof(buf);
 149
 150         pos += scnprintf(buf + pos, bufsz - pos, "mgmt: %u\n",
 151                                                 priv->rx_stats[0].cnt);
 152         pos += scnprintf(buf + pos, bufsz - pos, "ctrl: %u\n",
 153                                                 priv->rx_stats[1].cnt);
 154         pos += scnprintf(buf + pos, bufsz - pos, "data: %u\n",
 155                                                 priv->rx_stats[2].cnt);
 156
 157         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 158 }
 159
 160 #define BYTE1_MASK 0x000000ff;
 161 #define BYTE2_MASK 0x0000ffff;
 162 #define BYTE3_MASK 0x00ffffff;
 163 static ssize_t iwl_dbgfs_sram_read(struct file *file,
 164                                         char __user *user_buf,
 165                                         size_t count, loff_t *ppos)
 166 {
 167         u32 val;
 168         char buf[1024];
 169         ssize_t ret;
 170         int i;
 171         int pos = 0;
 172         struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
 173         const size_t bufsz = sizeof(buf);
 174
 175         for (i = priv->dbgfs->sram_len; i > 0; i -= 4) {
 176                 val = iwl_read_targ_mem(priv, priv->dbgfs->sram_offset + \
 177                                         priv->dbgfs->sram_len - i);
 178                 if (i < 4) {
 179                         switch (i) {
 180                         case 1:
 181                                 val &= BYTE1_MASK;
 182                                 break;
 183                         case 2:
 184                                 val &= BYTE2_MASK;
 185                                 break;
 186                         case 3:
 187                                 val &= BYTE3_MASK;
 188                                 break;
 189                         }
 190                 }
 191                 pos += scnprintf(buf + pos, bufsz - pos, "0x%08x ", val);
 192         }
 193         pos += scnprintf(buf + pos, bufsz - pos, "\n");
 194
 195         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 196         return ret;
 197 }
 198
 199 static ssize_t iwl_dbgfs_sram_write(struct file *file,
 200                                         const char __user *user_buf,
 201                                         size_t count, loff_t *ppos)
 202 {
 203         struct iwl_priv *priv = file->private_data;
 204         char buf[64];
 205         int buf_size;
 206         u32 offset, len;
 207
 208         memset(buf, 0, sizeof(buf));
 209         buf_size = min(count, sizeof(buf) -  1);
 210         if (copy_from_user(buf, user_buf, buf_size))
 211                 return -EFAULT;
 212
 213         if (sscanf(buf, "%x,%x", &offset, &len) == 2) {
 214                 priv->dbgfs->sram_offset = offset;
 215                 priv->dbgfs->sram_len = len;
 216         } else {
 217                 priv->dbgfs->sram_offset = 0;
 218                 priv->dbgfs->sram_len = 0;
 219         }
 220
 221         return count;
 222 }
 223
 224 static ssize_t iwl_dbgfs_stations_read(struct file *file, char __user *user_buf,
 225                                         size_t count, loff_t *ppos)
 226 {
 227         struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
 228         struct iwl_station_entry *station;
 229         int max_sta = priv->hw_params.max_stations;
 230         char *buf;
 231         int i, j, pos = 0;
 232         ssize_t ret;
 233         /* Add 30 for initial string */
 234         const size_t bufsz = 30 + sizeof(char) * 500 * (priv->num_stations);
 235
 236         buf = kmalloc(bufsz, GFP_KERNEL);
 237         if (!buf)
 238                 return -ENOMEM;
 239
 240         pos += scnprintf(buf + pos, bufsz - pos, "num of stations: %d\n\n",
 241                         priv->num_stations);
 242
 243         for (i = 0; i < max_sta; i++) {
 244                 station = &priv->stations[i];
 245                 if (station->used) {
 246                         pos += scnprintf(buf + pos, bufsz - pos,
 247                                         "station %d:\ngeneral data:\n", i+1);
 248                         pos += scnprintf(buf + pos, bufsz - pos, "id: %u\n",
 249                                         station->sta.sta.sta_id);
 250                         pos += scnprintf(buf + pos, bufsz - pos, "mode: %u\n",
 251                                         station->sta.mode);
 252                         pos += scnprintf(buf + pos, bufsz - pos,
 253                                         "flags: 0x%x\n",
 254                                         station->sta.station_flags_msk);
 255                         pos += scnprintf(buf + pos, bufsz - pos,
 256                                         "ps_status: %u\n", station->ps_status);
 257                         pos += scnprintf(buf + pos, bufsz - pos, "tid data:\n");
 258                         pos += scnprintf(buf + pos, bufsz - pos,
 259                                         "seq_num\t\ttxq_id");
 260                         pos += scnprintf(buf + pos, bufsz - pos,
 261                                         "\tframe_count\twait_for_ba\t");
 262                         pos += scnprintf(buf + pos, bufsz - pos,
 263                                         "start_idx\tbitmap0\t");
 264                         pos += scnprintf(buf + pos, bufsz - pos,
 265                                         "bitmap1\trate_n_flags");
 266                         pos += scnprintf(buf + pos, bufsz - pos, "\n");
 267
 268                         for (j = 0; j < MAX_TID_COUNT; j++) {
 269                                 pos += scnprintf(buf + pos, bufsz - pos,
 270                                                 "[%d]:\t\t%u", j,
 271                                                 station->tid[j].seq_number);
 272                                 pos += scnprintf(buf + pos, bufsz - pos,
 273                                                 "\t%u\t\t%u\t\t%u\t\t",
 274                                                 station->tid[j].agg.txq_id,
 275                                                 station->tid[j].agg.frame_count,
 276                                                 station->tid[j].agg.wait_for_ba);
 277                                 pos += scnprintf(buf + pos, bufsz - pos,
 278                                                 "%u\t%llu\t%u",
 279                                                 station->tid[j].agg.start_idx,
 280                                                 (unsigned long long)station->tid[j].agg.bitmap,
 281                                                 station->tid[j].agg.rate_n_flags);
 282                                 pos += scnprintf(buf + pos, bufsz - pos, "\n");
 283                         }
 284                         pos += scnprintf(buf + pos, bufsz - pos, "\n");
 285                 }
 286         }
 287
 288         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 289         kfree(buf);
 290         return ret;
 291 }
 292
 293 static ssize_t iwl_dbgfs_nvm_read(struct file *file,
 294                                        char __user *user_buf,
 295                                        size_t count,
 296                                        loff_t *ppos)
 297 {
 298         ssize_t ret;
 299         struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
 300         int pos = 0, ofs = 0, buf_size = 0;
 301         const u8 *ptr;
 302         char *buf;
 303         size_t eeprom_len = priv->cfg->eeprom_size;
 304         buf_size = 4 * eeprom_len + 256;
 305
 306         if (eeprom_len % 16) {
 307                 IWL_ERR(priv, "NVM size is not multiple of 16.\n");
 308                 return -ENODATA;
 309         }
 310
 311         /* 4 characters for byte 0xYY */
 312         buf = kzalloc(buf_size, GFP_KERNEL);
 313         if (!buf) {
 314                 IWL_ERR(priv, "Can not allocate Buffer\n");
 315                 return -ENOMEM;
 316         }
 317
 318         ptr = priv->eeprom;
 319         if (!ptr) {
 320                 IWL_ERR(priv, "Invalid EEPROM/OTP memory\n");
 321                 return -ENOMEM;
 322         }
 323         pos += scnprintf(buf + pos, buf_size - pos, "NVM Type: %s\n",
 324                         (priv->nvm_device_type == NVM_DEVICE_TYPE_OTP)
 325                         ? "OTP" : "EEPROM");
 326         for (ofs = 0 ; ofs < eeprom_len ; ofs += 16) {
 327                 pos += scnprintf(buf + pos, buf_size - pos, "0x%.4x ", ofs);
 328                 hex_dump_to_buffer(ptr + ofs, 16 , 16, 2, buf + pos,
 329                                    buf_size - pos, 0);
 330                 pos += strlen(buf);
 331                 if (buf_size - pos > 0)
 332                         buf[pos++] = '\n';
 333         }
 334
 335         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 336         kfree(buf);
 337         return ret;
 338 }
 339
 340 static ssize_t iwl_dbgfs_log_event_write(struct file *file,
 341                                         const char __user *user_buf,
 342                                         size_t count, loff_t *ppos)
 343 {
 344         struct iwl_priv *priv = file->private_data;
 345         u32 event_log_flag;
 346         char buf[8];
 347         int buf_size;
 348
 349         memset(buf, 0, sizeof(buf));
 350         buf_size = min(count, sizeof(buf) -  1);
 351         if (copy_from_user(buf, user_buf, buf_size))
 352                 return -EFAULT;
 353         if (sscanf(buf, "%d", &event_log_flag) != 1)
 354                 return -EFAULT;
 355         if (event_log_flag == 1)
 356                 iwl_dump_nic_event_log(priv);
 357
 358         return count;
 359 }
 360
 361
 362
 363 static ssize_t iwl_dbgfs_channels_read(struct file *file, char __user *user_buf,
 364                                        size_t count, loff_t *ppos)
 365 {
 366         struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
 367         struct ieee80211_channel *channels = NULL;
 368         const struct ieee80211_supported_band *supp_band = NULL;
 369         int pos = 0, i, bufsz = PAGE_SIZE;
 370         char *buf;
 371         ssize_t ret;
 372
 373         if (!test_bit(STATUS_GEO_CONFIGURED, &priv->status))
 374                 return -EAGAIN;
 375
 376         buf = kzalloc(bufsz, GFP_KERNEL);
 377         if (!buf) {
 378                 IWL_ERR(priv, "Can not allocate Buffer\n");
 379                 return -ENOMEM;
 380         }
 381
 382         supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_2GHZ);
 383         if (supp_band) {
 384                 channels = supp_band->channels;
 385
 386                 pos += scnprintf(buf + pos, bufsz - pos,
 387                                 "Displaying %d channels in 2.4GHz band 802.11bg):\n",
 388                                 supp_band->n_channels);
 389
 390                 for (i = 0; i < supp_band->n_channels; i++)
 391                         pos += scnprintf(buf + pos, bufsz - pos,
 392                                         "%d: %ddBm: BSS%s%s, %s.\n",
 393                                         ieee80211_frequency_to_channel(
 394                                         channels[i].center_freq),
 395                                         channels[i].max_power,
 396                                         channels[i].flags & IEEE80211_CHAN_RADAR ?
 397                                         " (IEEE 802.11h required)" : "",
 398                                         ((channels[i].flags & IEEE80211_CHAN_NO_IBSS)
 399                                         || (channels[i].flags &
 400                                         IEEE80211_CHAN_RADAR)) ? "" :
 401                                         ", IBSS",
 402                                         channels[i].flags &
 403                                         IEEE80211_CHAN_PASSIVE_SCAN ?
 404                                         "passive only" : "active/passive");
 405         }
 406         supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_5GHZ);
 407         if (supp_band) {
 408                 channels = supp_band->channels;
 409
 410                 pos += scnprintf(buf + pos, bufsz - pos,
 411                                 "Displaying %d channels in 5.2GHz band (802.11a)\n",
 412                                 supp_band->n_channels);
 413
 414                 for (i = 0; i < supp_band->n_channels; i++)
 415                         pos += scnprintf(buf + pos, bufsz - pos,
 416                                         "%d: %ddBm: BSS%s%s, %s.\n",
 417                                         ieee80211_frequency_to_channel(
 418                                         channels[i].center_freq),
 419                                         channels[i].max_power,
 420                                         channels[i].flags & IEEE80211_CHAN_RADAR ?
 421                                         " (IEEE 802.11h required)" : "",
 422                                         ((channels[i].flags & IEEE80211_CHAN_NO_IBSS)
 423                                         || (channels[i].flags &
 424                                         IEEE80211_CHAN_RADAR)) ? "" :
 425                                         ", IBSS",
 426                                         channels[i].flags &
 427                                         IEEE80211_CHAN_PASSIVE_SCAN ?
 428                                         "passive only" : "active/passive");
 429         }
 430         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 431         kfree(buf);
 432         return ret;
 433 }
 434
 435 static ssize_t iwl_dbgfs_status_read(struct file *file,
 436                                                 char __user *user_buf,
 437                                                 size_t count, loff_t *ppos) {
 438
 439         struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
 440         char buf[512];
 441         int pos = 0;
 442         const size_t bufsz = sizeof(buf);
 443
 444         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_HCMD_ACTIVE:\t %d\n",
 445                 test_bit(STATUS_HCMD_ACTIVE, &priv->status));
 446         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_HCMD_SYNC_ACTIVE: %d\n",
 447                 test_bit(STATUS_HCMD_SYNC_ACTIVE, &priv->status));
 448         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_INT_ENABLED:\t %d\n",
 449                 test_bit(STATUS_INT_ENABLED, &priv->status));
 450         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_RF_KILL_HW:\t %d\n",
 451                 test_bit(STATUS_RF_KILL_HW, &priv->status));
 452         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_INIT:\t\t %d\n",
 453                 test_bit(STATUS_INIT, &priv->status));
 454         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_ALIVE:\t\t %d\n",
 455                 test_bit(STATUS_ALIVE, &priv->status));
 456         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_READY:\t\t %d\n",
 457                 test_bit(STATUS_READY, &priv->status));
 458         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_TEMPERATURE:\t %d\n",
 459                 test_bit(STATUS_TEMPERATURE, &priv->status));
 460         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_GEO_CONFIGURED:\t %d\n",
 461                 test_bit(STATUS_GEO_CONFIGURED, &priv->status));
 462         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_EXIT_PENDING:\t %d\n",
 463                 test_bit(STATUS_EXIT_PENDING, &priv->status));
 464         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_STATISTICS:\t %d\n",
 465                 test_bit(STATUS_STATISTICS, &priv->status));
 466         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_SCANNING:\t %d\n",
 467                 test_bit(STATUS_SCANNING, &priv->status));
 468         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_SCAN_ABORTING:\t %d\n",
 469                 test_bit(STATUS_SCAN_ABORTING, &priv->status));
 470         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_SCAN_HW:\t\t %d\n",
 471                 test_bit(STATUS_SCAN_HW, &priv->status));
 472         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_POWER_PMI:\t %d\n",
 473                 test_bit(STATUS_POWER_PMI, &priv->status));
 474         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_FW_ERROR:\t %d\n",
 475                 test_bit(STATUS_FW_ERROR, &priv->status));
 476         pos += scnprintf(buf + pos, bufsz - pos, "STATUS_MODE_PENDING:\t %d\n",
 477                 test_bit(STATUS_MODE_PENDING, &priv->status));
 478         return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 479 }
 480
 481 static ssize_t iwl_dbgfs_interrupt_read(struct file *file,
 482                                         char __user *user_buf,
 483                                         size_t count, loff_t *ppos) {
 484
 485         struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
 486         int pos = 0;
 487         int cnt = 0;
 488         char *buf;
 489         int bufsz = 24 * 64; /* 24 items * 64 char per item */
 490         ssize_t ret;
 491
 492         buf = kzalloc(bufsz, GFP_KERNEL);
 493         if (!buf) {
 494                 IWL_ERR(priv, "Can not allocate Buffer\n");
 495                 return -ENOMEM;
 496         }
 497
 498         pos += scnprintf(buf + pos, bufsz - pos,
 499                         "Interrupt Statistics Report:\n");
 500
 501         pos += scnprintf(buf + pos, bufsz - pos, "HW Error:\t\t\t %u\n",
 502                 priv->isr_stats.hw);
 503         pos += scnprintf(buf + pos, bufsz - pos, "SW Error:\t\t\t %u\n",
 504                 priv->isr_stats.sw);
 505         if (priv->isr_stats.sw > 0) {
 506                 pos += scnprintf(buf + pos, bufsz - pos,
 507                         "\tLast Restarting Code:  0x%X\n",
 508                         priv->isr_stats.sw_err);
 509         }
 510 #ifdef CONFIG_IWLWIFI_DEBUG
 511         pos += scnprintf(buf + pos, bufsz - pos, "Frame transmitted:\t\t %u\n",
 512                 priv->isr_stats.sch);
 513         pos += scnprintf(buf + pos, bufsz - pos, "Alive interrupt:\t\t %u\n",
 514                 priv->isr_stats.alive);
 515 #endif
 516         pos += scnprintf(buf + pos, bufsz - pos,
 517                 "HW RF KILL switch toggled:\t %u\n",
 518                 priv->isr_stats.rfkill);
 519
 520         pos += scnprintf(buf + pos, bufsz - pos, "CT KILL:\t\t\t %u\n",
 521                 priv->isr_stats.ctkill);
 522
 523         pos += scnprintf(buf + pos, bufsz - pos, "Wakeup Interrupt:\t\t %u\n",
 524                 priv->isr_stats.wakeup);
 525
 526         pos += scnprintf(buf + pos, bufsz - pos,
 527                 "Rx command responses:\t\t %u\n",
 528                 priv->isr_stats.rx);
 529         for (cnt = 0; cnt < REPLY_MAX; cnt++) {
 530                 if (priv->isr_stats.rx_handlers[cnt] > 0)
 531                         pos += scnprintf(buf + pos, bufsz - pos,
 532                                 "\tRx handler[%36s]:\t\t %u\n",
 533                                 get_cmd_string(cnt),
 534                                 priv->isr_stats.rx_handlers[cnt]);
 535         }
 536
 537         pos += scnprintf(buf + pos, bufsz - pos, "Tx/FH interrupt:\t\t %u\n",
 538                 priv->isr_stats.tx);
 539
 540         pos += scnprintf(buf + pos, bufsz - pos, "Unexpected INTA:\t\t %u\n",
 541                 priv->isr_stats.unhandled);
 542
 543         ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
 544         kfree(buf);
 545         return ret;
 546 }
 547
 548 static ssize_t iwl_dbgfs_interrupt_write(struct file *file,
 549                                          const char __user *user_buf,
 550                                          size_t count, loff_t *ppos)
 551 {
 552         struct iwl_priv *priv = file->private_data;
 553         char buf[8];
 554         int buf_size;
 555         u32 reset_flag;
 556
 557         memset(buf, 0, sizeof(buf));
 558         buf_size = min(count, sizeof(buf) -  1);
 559         if (copy_from_user(buf, user_buf, buf_size))
 560                 return -EFAULT;
 561         if (sscanf(buf, "%x", &reset_flag) != 1)
 562                 return -EFAULT;
 563         if (reset_flag == 0)
 564                 iwl_clear_isr_stats(priv);
 565
 566         return count;
 567 }
 568
 569
 570 DEBUGFS_READ_WRITE_FILE_OPS(sram);
 571 DEBUGFS_WRITE_FILE_OPS(log_event);
 572 DEBUGFS_READ_FILE_OPS(nvm);
 573 DEBUGFS_READ_FILE_OPS(stations);
 574 DEBUGFS_READ_FILE_OPS(rx_statistics);
 575 DEBUGFS_READ_FILE_OPS(tx_statistics);
 576 DEBUGFS_READ_FILE_OPS(channels);
 577 DEBUGFS_READ_FILE_OPS(status);
 578 DEBUGFS_READ_WRITE_FILE_OPS(interrupt);
 579
 580 /*
 581  * Create the debugfs files and directories
 582  *
 583  */
 584 int iwl_dbgfs_register(struct iwl_priv *priv, const char *name)
 585 {
 586         struct iwl_debugfs *dbgfs;
 587         struct dentry *phyd = priv->hw->wiphy->debugfsdir;
 588         int ret = 0;
 589
 590         dbgfs = kzalloc(sizeof(struct iwl_debugfs), GFP_KERNEL);
 591         if (!dbgfs) {
 592                 ret = -ENOMEM;
 593                 goto err;
 594         }
 595
 596         priv->dbgfs = dbgfs;
 597         dbgfs->name = name;
 598         dbgfs->dir_drv = debugfs_create_dir(name, phyd);
 599         if (!dbgfs->dir_drv || IS_ERR(dbgfs->dir_drv)) {
 600                 ret = -ENOENT;
 601                 goto err;
 602         }
 603
 604         DEBUGFS_ADD_DIR(data, dbgfs->dir_drv);
 605         DEBUGFS_ADD_DIR(rf, dbgfs->dir_drv);
 606         DEBUGFS_ADD_FILE(nvm, data);
 607         DEBUGFS_ADD_FILE(sram, data);
 608         DEBUGFS_ADD_FILE(log_event, data);
 609         DEBUGFS_ADD_FILE(stations, data);
 610         DEBUGFS_ADD_FILE(rx_statistics, data);
 611         DEBUGFS_ADD_FILE(tx_statistics, data);
 612         DEBUGFS_ADD_FILE(channels, data);
 613         DEBUGFS_ADD_FILE(status, data);
 614         DEBUGFS_ADD_FILE(interrupt, data);
 615         DEBUGFS_ADD_BOOL(disable_sensitivity, rf, &priv->disable_sens_cal);
 616         DEBUGFS_ADD_BOOL(disable_chain_noise, rf,
 617                          &priv->disable_chain_noise_cal);
 618         DEBUGFS_ADD_BOOL(disable_tx_power, rf, &priv->disable_tx_power_cal);
 619         return 0;
 620
 621 err:
 622         IWL_ERR(priv, "Can't open the debugfs directory\n");
 623         iwl_dbgfs_unregister(priv);
 624         return ret;
 625 }
 626 EXPORT_SYMBOL(iwl_dbgfs_register);
 627
 628 /**
 629  * Remove the debugfs files and directories
 630  *
 631  */
 632 void iwl_dbgfs_unregister(struct iwl_priv *priv)
 633 {
 634         if (!priv->dbgfs)
 635                 return;
 636
 637         DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_nvm);
 638         DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_rx_statistics);
 639         DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_tx_statistics);
 640         DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_sram);
 641         DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_log_event);
 642         DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_stations);
 643         DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_channels);
 644         DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_status);
 645         DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_interrupt);
 646         DEBUGFS_REMOVE(priv->dbgfs->dir_data);
 647         DEBUGFS_REMOVE(priv->dbgfs->dbgfs_rf_files.file_disable_sensitivity);
 648         DEBUGFS_REMOVE(priv->dbgfs->dbgfs_rf_files.file_disable_chain_noise);
 649         DEBUGFS_REMOVE(priv->dbgfs->dbgfs_rf_files.file_disable_tx_power);
 650         DEBUGFS_REMOVE(priv->dbgfs->dir_rf);
 651         DEBUGFS_REMOVE(priv->dbgfs->dir_drv);
 652         kfree(priv->dbgfs);
 653         priv->dbgfs = NULL;
 654 }
 655 EXPORT_SYMBOL(iwl_dbgfs_unregister);
 656
 657
 658